Air cleaner



June 18, 1929. F. o. CLEMENTS AIR CLEANER Original Filed May 11, 1923 Patented June 18, 1929.

UNITED STATES 1,717,369 PATENT OFFICE.

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Original application fled Kay 11, 1.81, lerial I0. ms. Divided all. this application fled a, I,

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This case is a division of my pending application, Serial N umber 638,364 filed May 11, 1923.

The invention relates to airicleaners and 5 particularly to cleaners of the type in which separation of dust particles is efl'ected by causing the air to undergo abrupt changes in direction so as to cause the dust to be separated from the air stream by virtue of its 10 greater inertia. In the present design this is accomplished by causing the air to follow a whirling course so that the dust particles are thrown outwardly and hug the walls of the cas' Provision is made for the discharge is of the dust from the bottom of the casing. The clean air outlet communicates with the adjacent its axis so that none but relative clean air passes thro it. To insure at even the finest partic es of dust are I excluded, the outlet maybe provided with a filter which may take the form of a porous membrane supported on screening In the drawings diagrammatic view showing m air cleaner as arranged to clean the air supphed the crank case of an internal combustion e.

Figure 2 is an end view partly in section of the construction of 1.

FigureBis ahoriaon sectionontheline m 3-3ofFigure2andFigure4averticalsectFi on through the cleaner on the line 4-4 of ference character 8 indicates the crank case of an internal combustion engine, pro- Figure 1 is somewhat a vided with an air inlet 10 and an air outlet 12. 14 indicates my air cleaner as applied thereto. While I have illustrated this apecific application of my cleaner itis obvious that it is capable of use in supplying clean 40 air to mechanisms of various My cleaner consists of a cylindrical casing 16, rovided with a tangential inlet 18 and an out et 20 adapted for attachment to the crank case inlet 10. The outer end of the inlet 18 as is in the form of a funnel 22 and discharges into a flattened spiral tabs 24, leading into the interior of the casing. The casing 16 is provided with an extension 26 having a hopper like formation 27 at its lower and pro- 50 vided with a diechar port 28- The upper end of thecaaing 16 18 closed by a cover 80. Within the casing is arranged a filter unit consisting of a cup shaped stamping 88 conhavmgoneen nected by screen 34 of conical form with em nulus 36 seated within a second cup she (1 member 38 provided with an outstan ng flange 40 supported upon an inwardly turned flange 42 provided on the interior wall of the tube 24. Upon the screen 34 is mounted a filter 43, also conical in -form. This filter may be made of loosely packed felt or similar material.

The cleaner operates as follows: In the installation shown the funnel 22 receivesair from the engine cooling fan 41 and directs it I in a spiral path. This causes dust particles to be thrown outwardly because of their greater inertia. These particles eventually reach the bottom of the and are discharged through port 28. T e cleaned air upon reac verses its p and upwardly into the interior of the cone, through the screen 34 and filter 48 into the p 46 communicating with outlet 20 leading to the crank case. The p of the air through the filter eliminates all fine organic matter which might otherwise carried along with the air stream. As the centrifugal action eflects the removal of the major portion of the dust, it is obvious that the filter may be omitted if desired. In the application shown, the air thus relieved of its dust content, passes into the crank case where it eflects eva ration of diluents and is discharged through outlet 12.

An air cleaner comprising a cylindrical casing, means at one on of the casing for admitting air therein and 'ving it a whirling motion, said last means being provided with an inwardly directed annular sup porting portion, a tubular member having an outward y extending annular flange resting oil-said annular supporting portion and having an inwardly extendin flange, a cover for the casing and a tub ar filter member d resting on said second named flange and the other end by the cover, said being provid let on the intake side of the filter and with a Ellen air outlet on the discharge side of the ter. In testimony whereof I aflix my signature:

FRANK O. CLEMENTS.

the bottom of the casing rewith a dust outrticles, particular-l light 

